How common are engine complaints on the 2020 GMC Sierra 2500?

Engine complaints make up 15 of 76 total complaints filed for the 2020 Sierra 2500, or 20% of all complaints for this model year.

Is there a recall for the 2020 GMC Sierra 2500 engine?

NHTSA lists no recall specifically tied to the Engine component for this model year, though some owners mention a separate powertrain recall, Campaign Number 24V797000, related to transmission shifting problems.

At what mileage do engine problems typically appear on the 2020 Sierra 2500?

The median mileage at failure for engine-related complaints is 100,000 miles, based on NHTSA complaint data.

Did any 2020 Sierra 2500 engine complaints involve a fire?

Yes, NHTSA data shows one fire reported among the engine complaints for this model year, with no associated crashes or injuries.

How does the 2020 Sierra 2500's engine complaint share compare to other years?

The 2020 model's 20% share of engine complaints is close to other Sierra 2500 years, which range from about 7% to 25%, with 2024 having the highest complaint count at 17.

2020 GMC Sierra 2500 Engine Problems

Engine complaints account for 15 of 76 total complaints (20%) filed against the 2020 GMC Sierra 2500, with a median mileage at failure of 100,000 miles. No engine-specific recall is listed, though owners reference a separate powertrain recall (24V797000) tied to transmission issues after repairs.

Engine complaints: 15; 20% of 76
Crashes reported: 0
Fires reported: 1
Injuries reported: 0
Median mileage: 100,000 mi
Related recalls: 0

Typical engine symptoms owners report

One owner reported a fire in the engine compartment with smoke entering the cabin through the vents shortly after startup, at very low mileage.
Several owners describe the engine setting off a check engine light along with hard shifting or gear skipping, sometimes tied to a transmission software or module issue.
Owners report reduced fuel economy after a DPF emissions recall service, dropping from about 16.6 mpg to roughly 13 mpg on the same commute.
A recurring complaint involves a low coolant warning light triggering even when coolant is full, traced to a faulty sensor requiring full tank replacement.
Some owners report belt and tensioner failures that damaged the fan clutch and triggered a breakdown while driving.
Two owners describe catastrophic engine failure or catalytic converter failure around 93,000 to 125,000 miles, in one case requiring a full engine replacement after a recall repair.

When 2020 GMC Sierra 2500 engine complaints were filed

First complaint May 20, 2020, latest Sep 19, 2026.

15 complaints filed with NHTSA from May 2020 to Sep 2026; peak May 2020 (1).

Engine recalls for the 2020 GMC Sierra 2500

No safety recalls on record for this model year.

Engine complaints by Sierra 2500 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

20101 (10%)
20119 (14%)
20124 (13%)
20133 (7%)
20145 (17%)
20157 (8%)
20169 (15%)
20178 (22%)
20188 (23%)
20198 (25%)
202015 (20%)
20218 (16%)
20225 (12%)
20234 (13%)
202417 (16%)
20254 (14%)

Frequently asked questions

How common are engine complaints on the 2020 GMC Sierra 2500?: Engine complaints make up 15 of 76 total complaints filed for the 2020 Sierra 2500, or 20% of all complaints for this model year.
Is there a recall for the 2020 GMC Sierra 2500 engine?: NHTSA lists no recall specifically tied to the Engine component for this model year, though some owners mention a separate powertrain recall, Campaign Number 24V797000, related to transmission shifting problems.
At what mileage do engine problems typically appear on the 2020 Sierra 2500?: The median mileage at failure for engine-related complaints is 100,000 miles, based on NHTSA complaint data.
Did any 2020 Sierra 2500 engine complaints involve a fire?: Yes, NHTSA data shows one fire reported among the engine complaints for this model year, with no associated crashes or injuries.
How does the 2020 Sierra 2500's engine complaint share compare to other years?: The 2020 model's 20% share of engine complaints is close to other Sierra 2500 years, which range from about 7% to 25%, with 2024 having the highest complaint count at 17.